ASTROSAT CZTI

Data Quality Report

Orbit 59082

Creation date: 2026-08-29T12:31:00.636833
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_004T02_9000006600_59082cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59082cztM0_level2_quad_clean.evt
Size (bytes)792,025,92080,948,160
Size755.3 MB 77.2 MB
Events in quadrant A3,280,044647,481
Events in quadrant B4,917,874648,712
Events in quadrant C3,106,170625,163
Events in quadrant D17,489,92259,618

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144151
B0193931
C0142482
D0562721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67431392.061397%
B67446209.193357%
C67431021.512680%
D6743613290.938751%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7408 6743 14 14 0.19% 0.21%
B 7409 6744 283 283 3.82% 4.20%
C 7408 6743 10 10 0.13% 0.15%
D 7407 6742 6126 6126 82.71% 90.86%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 24 206086 1099.88 759 738 186.7
A 10 251 42467 223.51 759 738 186.7
A 4 3 19785 102.02 759 738 186.7
B 10 128 1637445 10470.18 729 701 156.3
B 5 185 130965 833.29 729 701 156.3
B 4 236 114909 730.58 729 701 156.3
C 14 254 40793 199.01 738 732 201.3
C 3 233 35637 173.39 738 732 201.3
C 7 255 31060 150.66 738 732 201.3
D 12 1 16424182 256011.42 224 214 64.2
D 2 207 45868 711.64 224 214 64.2
D 6 239 35434 549.0 224 214 64.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct